case back A transparent case back is a type of watch back which allows the wearer to view the inner workings of the watch mechanism. It is typically constructed from a crystal or transparent material, such as sapphire. This allows the wearer to view intricate details of the watch’s movement, including details such as the gears and jewels. It is often used in luxury watches, as it adds an air of sophistication and gives the wearer a sense of the craftsmanship that went into the watch’s construction.
